Cao Yang, Yi Hongyu, Ge Kongyu, Gao Yifan, Zhang Zhenchao, Feng Huanhuan
Sauvage Laboratory for Smart Materials, Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology (Shenzhen) China
State Key Laboratory of Advanced Welding and Joining (Shenzhen), Harbin Institute of Technology (Shenzhen) China.
RSC Adv. 2024 Jan 16;14(4):2720-2726. doi: 10.1039/d3ra07704g. eCollection 2024 Jan 10.
Magnetic microhelix motors are widely employed in various applications such as cargo transportation, drug delivery, toxic substance declogging, and cell manipulation, due to their unique adaptive magnetic manipulation capabilities. In this work, high-precision stereoscopic additive manufacturing techniques were used to produce customized microhelices with varying structural parameters, including different pitch numbers (2-4 pitches), sizes (0.1-0.25 mm), and taper angles (172°-180°). Their motion performance in mesoscopic tubes was systematically investigated. The magnetic microhelix motors' speed increases when circle numbers and taper angles decrease, while circle diameters increase. The magnetic microhelix motors' speed could achieve a 1500% enhancement reaching 0.16 mm s in a 0.3 mm tube, with a pitch number of 3, diameter of 0.2 mm, and taper angle of 172°. Furthermore, their vessel declogging capability is confirmed in experiments.
磁性微螺旋电机因其独特的自适应磁操纵能力，被广泛应用于货物运输、药物递送、有毒物质清除和细胞操纵等各种领域。在这项工作中，采用高精度立体增材制造技术来生产具有不同结构参数的定制微螺旋，包括不同的螺距数（2 - 4个螺距）、尺寸（0.1 - 0.25毫米）和锥角（172° - 180°）。系统地研究了它们在介观管中的运动性能。当圈数和锥角减小而圈直径增大时，磁性微螺旋电机的速度会增加。在螺距数为3、直径为0.2毫米、锥角为172°的情况下，磁性微螺旋电机在0.3毫米的管中速度可提高1500%，达到0.16毫米/秒。此外，实验证实了它们的血管疏通能力。
